package net.minecraft.client.gui;

import com.google.common.collect.Lists;

import forward.UI.Font.CFontRenderer;
import forward.UI.Font.FontLoaders;
import forward.Util.Render.RenderUtil;

import java.awt.Color;
import java.io.IOException;
import java.util.List;
import net.minecraft.network.play.client.C14PacketTabComplete;
import net.minecraft.util.BlockPos;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.IChatComponent;
import net.minecraft.util.MathHelper;
import net.minecraft.util.MovingObjectPosition;
import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;

public class GuiChat extends GuiScreen {
	private static final Logger logger = LogManager.getLogger();
	private String historyBuffer = "";

	/**
	 * keeps position of which chat message you will select when you press up, (does
	 * not increase for duplicated messages sent immediately after each other)
	 */
	private int sentHistoryCursor = -1;
	private boolean playerNamesFound;
	private boolean waitingOnAutocomplete;
	private int autocompleteIndex;
	private List<String> foundPlayerNames = Lists.<String>newArrayList();

	/** Chat entry field */
	protected GuiTextField inputField;

	/**
	 * is the text that appears when you press the chat key and the input box
	 * appears pre-filled
	 */
	private String defaultInputFieldText = "";

	public GuiChat() {
	}

	public GuiChat(String defaultText) {
		this.defaultInputFieldText = defaultText;
	}

	/**
	 * Adds the buttons (and other controls) to the screen in question. Called when
	 * the GUI is displayed and when the window resizes, the buttonList is cleared
	 * beforehand.
	 */
	public void initGui() {
		Keyboard.enableRepeatEvents(true);
		this.sentHistoryCursor = this.mc.ingameGUI.getChatGUI().getSentMessages().size();
		this.inputField = new GuiTextField(0, this.fontRendererObj, 30, this.height - 12, this.width - 4, 12);
		this.inputField.setMaxStringLength(100);
		this.inputField.setEnableBackgroundDrawing(false);
		this.inputField.setFocused(true);
		this.inputField.setText(this.defaultInputFieldText);
		this.inputField.setCanLoseFocus(false);
	}

	/**
	 * Called when the screen is unloaded. Used to disable keyboard repeat events
	 */
	public void onGuiClosed() {
		Keyboard.enableRepeatEvents(false);
		this.mc.ingameGUI.getChatGUI().resetScroll();
	}

	/**
	 * Called from the main game loop to update the screen.
	 */
	public void updateScreen() {
		this.inputField.updateCursorCounter();
	}

	/**
	 * Fired when a key is typed (except F11 which toggles full screen). This is the
	 * equivalent of KeyListener.keyTyped(KeyEvent e). Args : character (character
	 * on the key), keyCode (lwjgl Keyboard key code)
	 */
	protected void keyTyped(char typedChar, int keyCode) throws IOException {
		this.waitingOnAutocomplete = false;

		if (keyCode == 15) {
			this.autocompletePlayerNames();
		} else {
			this.playerNamesFound = false;
		}

		if (keyCode == 1) {
			this.mc.displayGuiScreen((GuiScreen) null);
		} else if (keyCode != 28 && keyCode != 156) {
			if (keyCode == 200) {
				this.getSentHistory(-1);
			} else if (keyCode == 208) {
				this.getSentHistory(1);
			} else if (keyCode == 201) {
				this.mc.ingameGUI.getChatGUI().scroll(this.mc.ingameGUI.getChatGUI().getLineCount() - 1);
			} else if (keyCode == 209) {
				this.mc.ingameGUI.getChatGUI().scroll(-this.mc.ingameGUI.getChatGUI().getLineCount() + 1);
			} else {
				this.inputField.textboxKeyTyped(typedChar, keyCode);
			}
		} else {
			String s = this.inputField.getText().trim();

			if (s.length() > 0) {
				this.sendChatMessage(s);
			}

			this.mc.displayGuiScreen((GuiScreen) null);
		}
	}

	/**
	 * Handles mouse input.
	 */
	public void handleMouseInput() throws IOException {
		super.handleMouseInput();
		int i = Mouse.getEventDWheel();

		if (i != 0) {
			if (i > 1) {
				i = 1;
			}

			if (i < -1) {
				i = -1;
			}

			if (!isShiftKeyDown()) {
				i *= 7;
			}

			this.mc.ingameGUI.getChatGUI().scroll(i);
		}
	}

	/**
	 * Called when the mouse is clicked. Args : mouseX, mouseY, clickedButton
	 */
	protected void mouseClicked(int mouseX, int mouseY, int mouseButton) throws IOException {
		if (mouseButton == 0) {
			IChatComponent ichatcomponent = this.mc.ingameGUI.getChatGUI().getChatComponent(Mouse.getX(), Mouse.getY());

			if (this.handleComponentClick(ichatcomponent)) {
				return;
			}
		}

		this.inputField.mouseClicked(mouseX, mouseY, mouseButton);
		super.mouseClicked(mouseX, mouseY, mouseButton);
	}

	/**
	 * Sets the text of the chat
	 */
	protected void setText(String newChatText, boolean shouldOverwrite) {
		if (shouldOverwrite) {
			this.inputField.setText(newChatText);
		} else {
			this.inputField.writeText(newChatText);
		}
	}

	public void autocompletePlayerNames() {
		if (this.playerNamesFound) {
			this.inputField
					.deleteFromCursor(this.inputField.func_146197_a(-1, this.inputField.getCursorPosition(), false)
							- this.inputField.getCursorPosition());

			if (this.autocompleteIndex >= this.foundPlayerNames.size()) {
				this.autocompleteIndex = 0;
			}
		} else {
			int i = this.inputField.func_146197_a(-1, this.inputField.getCursorPosition(), false);
			this.foundPlayerNames.clear();
			this.autocompleteIndex = 0;
			String s = this.inputField.getText().substring(i).toLowerCase();
			String s1 = this.inputField.getText().substring(0, this.inputField.getCursorPosition());
			this.sendAutocompleteRequest(s1, s);

			if (this.foundPlayerNames.isEmpty()) {
				return;
			}

			this.playerNamesFound = true;
			this.inputField.deleteFromCursor(i - this.inputField.getCursorPosition());
		}

		if (this.foundPlayerNames.size() > 1) {
			StringBuilder stringbuilder = new StringBuilder();

			for (String s2 : this.foundPlayerNames) {
				if (stringbuilder.length() > 0) {
					stringbuilder.append(", ");
				}

				stringbuilder.append(s2);
			}

			this.mc.ingameGUI.getChatGUI()
					.printChatMessageWithOptionalDeletion(new ChatComponentText(stringbuilder.toString()), 1);
		}

		this.inputField.writeText((String) this.foundPlayerNames.get(this.autocompleteIndex++));
	}

	private void sendAutocompleteRequest(String p_146405_1_, String p_146405_2_) {
		if (p_146405_1_.length() >= 1) {
			BlockPos blockpos = null;

			if (this.mc.objectMouseOver != null
					&& this.mc.objectMouseOver.typeOfHit == MovingObjectPosition.MovingObjectType.BLOCK) {
				blockpos = this.mc.objectMouseOver.getBlockPos();
			}

			this.mc.thePlayer.sendQueue.addToSendQueue(new C14PacketTabComplete(p_146405_1_, blockpos));
			this.waitingOnAutocomplete = true;
		}
	}

	/**
	 * input is relative and is applied directly to the sentHistoryCursor so -1 is
	 * the previous message, 1 is the next message from the current cursor position
	 */
	public void getSentHistory(int msgPos) {
		int i = this.sentHistoryCursor + msgPos;
		int j = this.mc.ingameGUI.getChatGUI().getSentMessages().size();
		i = MathHelper.clamp_int(i, 0, j);

		if (i != this.sentHistoryCursor) {
			if (i == j) {
				this.sentHistoryCursor = j;
				this.inputField.setText(this.historyBuffer);
			} else {
				if (this.sentHistoryCursor == j) {
					this.historyBuffer = this.inputField.getText();
				}

				this.inputField.setText((String) this.mc.ingameGUI.getChatGUI().getSentMessages().get(i));
				this.sentHistoryCursor = i;
			}
		}
	}

	/**
	 * Draws the screen and all the components in it. Args : mouseX, mouseY,
	 * renderPartialTicks
	 */
	public void drawScreen(int mouseX, int mouseY, float partialTicks) {
		Gui.drawRect(26, this.height - 14, this.width - 2, this.height - 2,
				new Color(108, 108, 108, 160).getRGB());
		RenderUtil.R2DUtils.drawRoundedRect(2, this.height - 14, 28, this.height - 2, new Color(234, 234, 234,160).getRGB(),
				new Color(234, 234, 234,160).getRGB());
		CFontRenderer font = FontLoaders.GoogleSans16;
		if (inputField.getText().startsWith(".") && !inputField.getText().contains(".irc")) {
			font.drawString("CMD", 6, this.height - 10, new Color(47, 154, 241).getRGB());
		} else if (inputField.getText().startsWith(".irc")) {
			font.drawString("IRC", 8, this.height - 10, new Color(47, 154, 241).getRGB());
		} else if (inputField.getText().startsWith("/")) {
			font.drawString("CMD", 6, this.height - 10, new Color(47, 154, 241).getRGB());
		} else {
			font.drawString("CHAT", 4, this.height - 10, new Color(47, 154, 241).getRGB());
		}
		this.inputField.drawTextBox();
		IChatComponent ichatcomponent = this.mc.ingameGUI.getChatGUI().getChatComponent(Mouse.getX(), Mouse.getY());

		if (ichatcomponent != null && ichatcomponent.getChatStyle().getChatHoverEvent() != null) {
			this.handleComponentHover(ichatcomponent, mouseX, mouseY);
		}

		super.drawScreen(mouseX, mouseY, partialTicks);
	}

	public void onAutocompleteResponse(String[] p_146406_1_) {
		if (this.waitingOnAutocomplete) {
			this.playerNamesFound = false;
			this.foundPlayerNames.clear();

			for (String s : p_146406_1_) {
				if (s.length() > 0) {
					this.foundPlayerNames.add(s);
				}
			}

			String s1 = this.inputField.getText()
					.substring(this.inputField.func_146197_a(-1, this.inputField.getCursorPosition(), false));
			String s2 = StringUtils.getCommonPrefix(p_146406_1_);

			if (s2.length() > 0 && !s1.equalsIgnoreCase(s2)) {
				this.inputField
						.deleteFromCursor(this.inputField.func_146197_a(-1, this.inputField.getCursorPosition(), false)
								- this.inputField.getCursorPosition());
				this.inputField.writeText(s2);
			} else if (this.foundPlayerNames.size() > 0) {
				this.playerNamesFound = true;
				this.autocompletePlayerNames();
			}
		}
	}

	/**
	 * Returns true if this GUI should pause the game when it is displayed in
	 * single-player
	 */
	public boolean doesGuiPauseGame() {
		return false;
	}
}
